Apparatus for printing photographs.



PATENTED JAN. 30, 1906.

AEPAR-ATUS FUR PRINTING PHOTOGRAPHS.

APPLICATION FILED MAR. 10, 1905,

3 SHLBETS-SHEET l.

No. 810,907. PATENTBD JAN. 30, 1906. E. I. BROWN.

APPARATUS FOR PRINTING PHOTOGRAPHS,

APPLIOATION IILED'MAR.10,1905.

7766165366.; I'wemfr Q WA MM/M/M, 49/JW.

UNITED STATES IE ENT OFFICE.

, EUTHADDEUS I. BROWN, OF PRINCESS ANN-E, MARYLAND.

APPARATUS FOR PRINTING PHOTOGRAPHS.

. Specification of Letters Patent.

Patented Jan. 30, 1906.

Application filed MarclilGglQOfi. Serial No. 249,3:13.

To all whom it may concern.-

Be it known that I, EUTHADDEUS I. BRowN, of Princess Anne, inthe county of Somerset and State of Maryland, have invented certain Improvements in Apparatus for Printing Photographs, of which the following is a specification.

In the description of the said invention which follows reference is made to the accompanying drawings, forming a part hereof, and in which Figure 1 is an exterior front view of the apparatus. Fig. 2 is a partly-sectional view of the lower part of Fig. 1, taken on the dotted line a: m. Fig. 3isa partly-sectional view of the motive mechanism shown in Fig. 2 looking in the direction indicated by the arrow in the figure. Fig. 4 is a perspective view, on a reduced scale, of the apparatus as it appears when in use.

Referring now to the drawings, 1 is a cabinet adapted to stand on a table in a dark room. The cabinet is provided with electric or other lamp. (Not shown.) The front and rear boards of the upper part a of the cabinet which overhang the lower part Z) are pro vided withapertures 2,. which when uncovered admit of the passage of light from the lamp to the photograph-plates in frames 3, which are arranged exteriorly of the cabinet, as hereinafter described. To support the frames 3, carrying the photograph-plates within the range of the light rays from the'lamp, the

cabinet is provided with bracliets 4, along which the holders 6 for the frames are adapted to slide and he adjusted in distance with respect to the cabinet. andtheir holders are well shown in Fig. at.

Referring now to Figs. 2 and 3, is a'clockmovement, the center wheel 7 of which rotates once in sixty minutes and has forty teeth, which wheel engages with the wheel 9, having twenty teeth, secured to the shaft 10. 12 12 are time-wheels placed loosely on the shaft and driven from the said shaft,by means of loose spiral springs 13, the one'to the left in Fig. 2 extending endwise between the hub of the time-wheel and the hub of the wheel 9. The said spring forces the timen'heel against a collar 15, pinned to the shaft 10, thereby producing sufficient friction to effet the rotation of the time-wheel and the closing of a cept that its spiral spring bears against the col- The brackets, frames,

spaces being denoted by 19. The purpose of the said notches will be hereinafter described. 20 are shutters situated within the cabinet and secured to the ends of arms 22, fastened to the independent vibratory shafts 24. The arms 22 pass through and are adapted to vibrate in suitable slots in the bottom of the overhanging or upper part a of the cabinet to cover or uncover the apertures 2 in the front and rear boards of the cabinet. The vibratory shafts 2.4 also carry the bent arms 25, the ends of which are adapted to enter the slots or spaces 19 in the time-wheels, and to enforce this action of the arms 25 and thereby instantly close the shutters the vibratory shafts 2 L are connected to the front and rear boards of the cabinet by means of the coiled springs 27, which are under tension.

29, the extreme ends of which are bent at a right angle and when in service rest on the Wire cams on the loose extension-shafts 32, which may be rotated independently of the shaft 10. The cams 30 in the rotation of the shaft 10 in the direction indicated by the dot ted arrow in Fig. 3 and which direction is the reverse of that produced by the clockmovement elevate-the straight arms 29 and cause the opening of the shutters, and in this operation the ends of the bent arms 25 are lifted from the notchts 19, and thereby admit of rotation of the time-wheels. The loose extension-shafts 32 are turned independently, as described, by hand throughthe mediums of crank-handles 34, and the means of con'pection between the said extension-shafts and-the time-wheels whereby the latter are rotated independently of the clock-movement .consist of the fingers 35, fixed to the said shaft, and the arms 37, tight on the hubs of the timewheels, the same engaging in the rotation of theextension-shafts. A finger and arm are shown approachingo'engagement in Fig. 3.

39 39 are segmental indicators secured to the front and rear boards of the lower section 5 of the cabinet, through the hubs of which the extension-shafts 32 pass loosely, and they are provided with an inner and an outer, row of holes, respectively, denoted by c and cl, ar-

ranged in semicircular lines concentric with the said shafts, as shown particularly-in Fig. 1. There are preferably fifteen holes in each The vibratory shaft is also provided with the straight arms {grved row, and the inner holes are placed tween the outer ones, and asa complete roor less. When the exposure of the light-Haysv to a photograph-plateis required to be less than fifteen minutes, the movement of the crank-handle to rotate the time-wheel is limited by placing a pin in. one of the holes, which serves as a stop to the movement of the crank-handle, as hereinafter more particularly described.

By reference to Fig. 3 of the drawings" it will be seen that the shape of the wire-cams 30 is such that it requires onlya slight rotation of the crank-handles to open the shutters and that the bent arms 25' are liftedb'ut of the slots or spaces 19 before the time-wheels are made to rotate by the engagement of the fingers35 with the arms37.

43 43 are plates of orange'molored glass to enable the operator to fill plate-frames at one side of the apparatus and develop pictures at the other: Y 1 I The operation of the apparatusis as follows:

Supposing that in printing a plate has to be exposed to the light for twelveminutes, the printing-frame3 is placed on aholder 6, which is slid longitudinally of its bracket- 4 until it reaches a position where 'it will be subjected to the proper intensity of light. A pin (shown in Figs. 1 and 4 and denoted by 41) is then placed in the twelfth hole'from the top on the outer curved row of holes in the segmental indicator' and the crankhandle 34 turned. in

the direction indicated by the arrow in Fig. 1

until it is stopped by the said pin, whenit is released. From the foregoing description it will be'understeod that in the movement of the crank-handle just described the cam 30 has operated to open the shutter 20, the bent lever 25 has been lifted out of thenotch 19 and clear of the rim ofthe time-wheel 12 and y then dropped onto the said rim. The time- 50,

wheel also is carried to such a position that when it is 'rotated'in a reverse direction by means of the clock-movement for the period of twelve minutes its edge 42 will pass frdm under'the end of the bentlever 25 and theshutter 20 be instantly closed. It will be fur ther understood that in the return rotation of the time-wheel 12 or that effected by the clockmovement, as described, the end of the arm 29 passes from the portion of the cam 30 which is concentric with the extension-shaft ment of the printing-frames toward and from- 32 to the part which is nearly radial, and thereby allows the end-of the bent wire 25 to fall into the slot 19 when thetime limit of exposure has been reached.

The apparatus as described admits of print- 6 5 ing at eitherthe front'or the rear of the cabi-* net independently of the other, and with di'fferent periods of exposure, while the intensity of the light may .be regulated by the adjustthe' lamp. It also admits of manipulations of plates and pictures at the sides of the cabinet in a protected lightwhich passes through the orange colored glass plates.

I claim as my invention- 75 I. In an apparatus; for printing photographs, an interiorly-lighted cabinet having openings in the walls thereof for the emission of'lig'ht, and means tosupport in astationary condition photograph-frames, adjustable in 30 position with respect to the said openings,

combined with shutters for the said openings, aclock-movement to operate the said shutters, and mechanism whereby the operation of the said-clock-movementis regulated to effect the duration of the time of exposure of the said openings, substantially as specified.

2. In an apparatus for printing photographs, a cabinet containing a lamp, having openings in its walls for the emission of light 9 from the lamp, shutters which are held yieldingly' in a condition whereby the said openings in the .walls of the-cabinet are covered,a clockmovement adapted when the shutters are opened by hand, to cover the same, and mechanism whereby the time of exposure, is regulated, and means for supporting photographframes exteriorly of the cabinet, and adjustable with reference tothe openings in the cabinet, substantially as-specified. v

3. In an apparatus for printing photographs, comprising an interiorly-illuminated cabinet with openings in the walls thereoflthe combination of a shaft, an arm extending from the shaft, a shutteron the said arm arrange to pass from a position over the said opening to one whereby the said opening is uncovered,

as-pring mechanism-to yieidingly hold the said shutter in a closed position, a clock-movement which is' normally inoperative to effect any movementv of the shutter, and mechanism whereby the shutter is manually-opened, and automatically closed by the clock-movement independently of the hand, substantiallyas I specified.

, .EUTHADDEUS 1. BROWN.

Witnesses:

SAML. H. SUDLER, WM. B; Srrva. 

